SYNTHESIS AND CHARACTERIZATION OF A NOVEL TYPE OF CONJUGATED POLYMER POLY[PYRROLE-2,5-DIYL(4-HYDROXY-3-METHYLOXYBENZYLIDENE)]

YAN Wei; WEI Zhixiang; WANG Lili; WAN Meixiang

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SYNTHESIS AND CHARACTERIZATION OF A NOVEL TYPE OF CONJUGATED POLYMER POLY[PYRROLE-2,5-DIYL(4-HYDROXY-3-METHYLOXYBENZYLIDENE)]

Research Article | 更新时间：2021-03-19

- SYNTHESIS AND CHARACTERIZATION OF A NOVEL TYPE OF CONJUGATED POLYMER POLY[PYRROLE-2,5-DIYL(4-HYDROXY-3-METHYLOXYBENZYLIDENE)]
- Acta Polymerica Sinica Issue 2, Pages: 157-161(2001)
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- Published：20 April 2001，
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YAN Wei, WEI Zhixiang, WANG Lili, WAN Meixiang. SYNTHESIS AND CHARACTERIZATION OF A NOVEL TYPE OF CONJUGATED POLYMER POLY[PYRROLE-2,5-DIYL(4-HYDROXY-3-METHYLOXYBENZYLIDENE)]. [J]. Acta Polymerica Sinica (2):157-161(2001)
DOI：

YAN Wei, WEI Zhixiang, WANG Lili, WAN Meixiang. SYNTHESIS AND CHARACTERIZATION OF A NOVEL TYPE OF CONJUGATED POLYMER POLY[PYRROLE-2,5-DIYL(4-HYDROXY-3-METHYLOXYBENZYLIDENE)]. [J]. Acta Polymerica Sinica (2):157-161(2001) DOI：

摘要

本文采用两步法合成了一种新型共轭高分子聚 [吡咯-2

5-二 (3-甲氧基-4-羟基苯甲烯)]

其前聚物聚 [吡咯-2

5-二(3-甲氧基-4-羟基苯甲烷)]可溶于一般的极性有机溶剂 .通过红外、核磁、紫外光谱分析鉴定了产物及其前聚物的结构 .利用DSC与TGA测试分析了所合成聚合物的热学性质 .紫外光谱表明在聚合物链中引入醌式吡咯环结构有利于降低产物的能隙

其能隙为1.14eV

属窄能隙类共轭聚合物 .经碘掺杂后产物的电导率在半导体的范围内.

Abstract

A novel type of conjugated poly[pyrrole-2

5-diyl(4-hydroxy-3-methyloxybenzylidene)](PPHMBE) was obtained by condensation of pyrrole with vanillin.The precursor poly[pyrrole-2

5-diyl(4-hydroxy-3-methyloxybenzylidane)](PPHMBA) is soluble in common organic solvents. Their structures were characterized by FT-IR、1H-NMR and UV-Vis spectroscopy. The molecular weight of the synthesized polymer is 46200. The thermal behavior of the synthesized polymers was evaluated by TGA and DSC analyses. The glass transition temperature (Tg) of PPHMBA and PPHMBE is 140.3℃ and 188.5℃

respectively.UV-Vis spectroscopy reveals that introducing quinoniod pyrrole rings in polymer chain can decrease the bandgap of conjugated polymers

and the energy bandgap of PPHMBE is 1.14eV. The conductivity of products doped with iodine is in the range of semiconductors.

关键词

共轭高分子聚[吡咯25二(3甲氧基4羟基苯甲烯)]窄能隙

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